2 * CDE - Common Desktop Environment
4 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
6 * These libraries and programs are free software; you can
7 * redistribute them and/or modify them under the terms of the GNU
8 * Lesser General Public License as published by the Free Software
9 * Foundation; either version 2 of the License, or (at your option)
12 * These libraries and programs are distributed in the hope that
13 * they will be useful, but WITHOUT ANY WARRANTY; without even the
14 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU Lesser General Public License for more
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with these libraries and programs; if not, write
20 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
21 * Floor, Boston, MA 02110-1301 USA
23 /* $XConsortium: DescriptorManager.C /main/1 1996/07/29 16:48:58 cde-hp $ */
24 // Copyright (c) 1994 James Clark
25 // See the file COPYING for copying permission.
28 #include "DescriptorManager.h"
32 namespace SP_NAMESPACE {
35 DescriptorUser::DescriptorUser(DescriptorManager *manager)
39 manager_->addUser(this);
42 DescriptorUser::~DescriptorUser()
45 manager_->removeUser(this);
48 void DescriptorUser::managerDeleted()
53 Boolean DescriptorUser::suspend()
58 void DescriptorUser::acquireD()
64 void DescriptorUser::releaseD()
70 DescriptorManager::DescriptorManager(int maxD)
71 : maxD_(maxD), usedD_(0)
75 DescriptorManager::~DescriptorManager()
77 for (ListIter<DescriptorUser *> iter(users_);
80 iter.cur()->managerDeleted();
83 void DescriptorManager::addUser(DescriptorUser *p)
88 void DescriptorManager::removeUser(DescriptorUser *p)
93 void DescriptorManager::acquireD()
95 if (usedD_ >= maxD_) {
96 for (ListIter<DescriptorUser *> iter(users_);
99 if (iter.cur()->suspend())
106 void DescriptorManager::releaseD()